STON Automatic Bending Machine Series A1 & B1: Breakthrough in Vacuum Workpiece Clamping Technology
I. MANUFACTURER
Qingdao Shengtong Mechanical Technology Co., Ltd. (STON), founded in 2006, is a national high-tech enterprise in China and a pioneer in the research and manufacture of CNC sheet metal processing equipment. With a factory complex spanning 20,000m², STON operates under an in-house production model, ensuring all equipment reaches optimal stability and mechanical precision.

Qingdao Shengtong Mechanical Technology Co., Ltd. (STON)
The STON A1 and B1 series of automatic bending machines represent a new step forward in sheet metal bending technology. Instead of using traditional mechanical clamps, this system integrates advanced vacuum suction cup technology, enabling high-speed workpiece handling while providing absolute protection for the material surface.
With a bending speed of up to 0.2 seconds/bend, a single STON A1/B1 machine can achieve productivity equivalent to 6 hydraulic bending machines operating simultaneously, helping businesses optimize labor costs and significantly shorten production cycles.
II. Outstanding Features of the STON Vacuum Bending Series
1. Vacuum Adsorption Clamping Technology
The high-efficiency vacuum suction system is the “soul” of the A1 and B1 series, offering several advantages:
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Absolute Precision: Completely eliminates workpiece slipping or misalignment when bending at extremely high speeds.
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Ultra-thin Workpiece Handling: Securely holds workpieces as thin as 0.15mm without causing deformation.
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Non-marking Bending: An ideal solution for mirror-finish stainless steel, aluminum, painted surfaces, oily surfaces, and other sensitive materials.

2. Superior Operational Performance
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Maximum Productivity: Capable of performing over 5,000 bends/day, increasing efficiency by up to 260% compared to older methods.
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Complex Profiles: Flexibly handles arcs, dead edges, closed bends, and special shapes without the need for manual tool changes.
3. Intelligent Control System & High-end Sensors
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Closed-loop Servo System: Utilizes an all-electric closed-loop servo system, allowing for real-time movement synchronization with micrometer precision.
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Bias Load Detection: Combined with a Grating Ruler to detect workpiece misalignment, protecting the tooling system and minimizing waste.
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Automatic Thickness Compensation: The machine automatically measures and adjusts the tool travel based on the actual thickness of the metal sheet during each clamping.
4. Industrial Mechanical Construction
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Ultra-rigid Machine Body: The frame is cast from QT500-7 cast iron and undergoes natural aging and high-temperature heat treatment to eliminate stress, ensuring no deformation over years of use.
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Copper Lubrication System: Uses high-pressure copper oil pipelines, which are durable and highly resistant to leakage compared to common PVC plastic tubes.
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42CrMo Alloy Steel Bending Tools: Pressure-forged and laser-hardened to ensure superior hardness and wear resistance.
5. Optimized Design for Harsh Environments
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Dedicated Electrical Cabinet Air Conditioning: An integrated cooling system maintains a stable temperature for electronic components and servo drivers, ensuring 24/7 operation even in hot workshop environments.
III. BENDING PROFILES WITHIN MACHINE CAPABILITY

IV. Ideal Applications for STON A1 & B1
This product is the top choice for industries requiring high aesthetics and precision:
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Electrical Equipment: Medium and low voltage electrical cabinets, transformer stations, and Server racks.
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Premium Appliances: Stainless steel kitchen equipment, washing machine housings, and specialized refrigerators.
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Architecture & Elevators: Elevator panels and large-scale decorative sheets.
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New Technologies: Electric vehicle (EV) battery housings and solar energy components.
- Fire Doors: Various types of fire doors with complex profiles.


















